Freezing resistance in Patagonian woody shrubs: the role of cell wall elasticity and stem vessel size
文献类型：期刊论文
| 作者 | Zhang, Yong-Jiang1,2; Bucci, Sandra J.3,4; Arias, Nadia S.3,4; Scholz, Fabian G.3,4; Hao, Guang-You5; Cao, Kun-Fang6; Goldstein, Guillermo7,8 |
| 刊名 | TREE PHYSIOLOGY
 |
| 出版日期 | 2016-08-01 |
| 卷号 | 36期号:8页码:1007-1018 |
| 关键词 | Bulk Elastic Modulus Ice Nucleation Temperature Leaf Lethal Temperature Patagonian Steppe Pressure Volume Relationship Supercooling |
| ISSN号 | 0829-318X |
| DOI | 10.1093/treephys/tpw036 |
| 英文摘要 | Freezing resistance through avoidance or tolerance of extracellular ice nucleation is important for plant survival in habitats with frequent subzero temperatures. However, the role of cell walls in leaf freezing resistance and the coordination between leaf and stem physiological processes under subzero temperatures are not well understood. We studied leaf and stem responses to freezing temperatures, leaf and stem supercooling, leaf bulk elastic modulus and stem xylem vessel size of six Patagonian shrub species from two sites (plateau and low elevation sites) with different elevation and minimum temperatures. Ice seeding was initiated in the stem and quickly spread to leaves, but two species from the plateau site had barriers against rapid spread of ice. Shrubs with xylem vessels smaller in diameter had greater stem supercooling capacity, i.e., ice nucleated at lower subzero temperatures. Only one species with the lowest ice nucleation temperature among all species studied exhibited freezing avoidance by substantial supercooling, while the rest were able to tolerate extracellular freezing from -11.3 to -20 degrees C. Leaves of species with more rigid cell walls (higher bulk elastic modulus) could survive freezing to lower subzero temperatures, suggesting that rigid cell walls potentially reduce the degree of physical injury to cell membranes during the extracellular freezing and/or thaw processes. In conclusion, our results reveal the temporal spatial ice spreading pattern (from stem to leaves) in Patagonian shrubs, and indicate the role of xylem vessel size in determining supercooling capacity and the role of cell wall elasticity in determining leaf tolerance of extracellular ice formation. |
| WOS研究方向 | Forestry |
| 语种 | 英语 |
| WOS记录号 | WOS:000385291800008 |
| 出版者 | OXFORD UNIV PRESS |
| 源URL | [http://210.72.129.5/handle/321005/122819]  |
| 专题 | 中国科学院沈阳应用生态研究所 |
| 通讯作者 | Zhang, Yong-Jiang; Goldstein, Guillermo |
| 作者单位 | 1.Chinese Acad Sci, Xishuangbanna Trop Bot Garden, Key Lab Trop Forest Ecol, Mengla 666303, Yunnan, Peoples R China 2.Harvard Univ, Dept Organism & Evolutionary Biol, Cambridge, MA 02138 USA 3.Univ Nacl Patagonia San Juan Bosco, Consejo Nacl Invest Cient & Tecn CONICET, RA-9000 Comodoro Rivadavia, Argentina 4.Univ Nacl Patagonia San Juan Bosco, Grp Estudios Biofis & Ecofisiol GEBEF, Dept Biol, RA-9000 Comodoro Rivadavia, Argentina 5.Chinese Acad Sci, Inst Appl Ecol, Shenyang 110164, Peoples R China 6.Guangxi Univ, State Key Lab Conservat & Utilizat Subtrop Agrobi, Key Lab, Minist Educ Microbial & Plant Genet Engn,Coll For, Nanning 530004, Guangxi, Peoples R China 7.Univ Miami, Dept Biol, POB 249118, Coral Gables, FL 33124 USA 8.Univ Buenos Aires, Fac Ciencias Exactas & Nat, Dept Ecol Genet & Evoluc, Ciudad Univ,C1428EGA, Buenos Aires, DF, Argentina |
| 推荐引用方式 GB/T 7714 | Zhang, Yong-Jiang,Bucci, Sandra J.,Arias, Nadia S.,et al. Freezing resistance in Patagonian woody shrubs: the role of cell wall elasticity and stem vessel size[J]. TREE PHYSIOLOGY,2016,36(8):1007-1018. |
| APA | Zhang, Yong-Jiang.,Bucci, Sandra J..,Arias, Nadia S..,Scholz, Fabian G..,Hao, Guang-You.,...&Goldstein, Guillermo.(2016).Freezing resistance in Patagonian woody shrubs: the role of cell wall elasticity and stem vessel size.TREE PHYSIOLOGY,36(8),1007-1018. |
| MLA | Zhang, Yong-Jiang,et al."Freezing resistance in Patagonian woody shrubs: the role of cell wall elasticity and stem vessel size".TREE PHYSIOLOGY 36.8(2016):1007-1018. |
入库方式： OAI收割
来源：沈阳应用生态研究所
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